Feed conveyer



July 2, i935. w, W. HARTMAN.

FVEED CONV EYER Filed July ll, 1951 '7 Sheets-Sheet l I AI `l-uly 2, 1935.A W W HARTMAN FEET) CONVEYER Filed July ll. 1931 7 Sheets-Sheet 2 ngz July 2, 1935. vv. HARTMAN FEED CONVEYER Filed July ll, 7 Sheets-Sheet 5 Izzi/wiwi william Walter IMM/fm.

FEED CONVEYER Filed July ll, 1931 7 Sheets-Sheet 4 Inventar ZI/Zlz'zzrfz Malin' Harina.

lJuly 2, 1935. w w. HARTMAN FEED GONVEYER Filed July ll, 1931 7 Sheets-Sheet 5 Inventor William Mali Harfzafz.

Harney.

July 2, 1935. .w vv. HARTMAN FEED CONVEYER 7 Sheets-Sheet 6 Filed July ll, 1951 l ffwentbr ZI/Zlz'mrz Malin Hartman ./Ztarney `luly 2, 1935.

w. W. HARTMAN FEED CONVEYER Filed July ll, 1931 7 Sheets-Sheet 7 Patented July 2, 193s UNITED sTATizs FEED coNvEYEn t William Walter Hartman, Los ngeles, Calif. K Application July 11, 1931, Serial No. 550,199 1s claims. (ci. 198;-168')` This invention has to do with such machines as bread Slicers and Wrappers and with conveying means for moving a sliced loaf from the Slicer into the Wrapper to the point Where the sliced loaf is f5 Wrapped, holding the slices together without the necessity of using a tray or band or similarappliance for temporarily holding the slices until wrapped. The invention has been made andl designed particularly with a view to the slicing and Wrapping of bread, and Will be more particularly described in that relation; although it will be understood that the invention, in its various aspects, is not necessarily limited to operations upon loaves or bread, but is capable of application Wherever any article is to be subdivided and Wrapped or Where any subdivided article, or group of articles, is to be moved or conveyed as a unit without relative displacement.

With these understandings in mind l' shall proceed to describe the invention more particularly as applied tothe slicing and Wrapping oi' bread. l-ieretofore, when a loaf of bread has been sliced, it has been common to apply to the sliced unit Va tray or band, usually applied by hand. This tray or band has performed the function of holding the sliced unit together while itis being carried or conveyed from the slicer to the Wrapper, and while it is being moved into and through the wrapper to the wrapping point. When the Wrapping is o once applied it, of course, holds the unit together from that point on through the remainder of the operations. This prior practice has necessitated what I conceive to be unnecessary labor and cost of the tray or bands utilized. 'f 35 It is a general object of my invention to provide automatic mechanisms which, in any such case as that above outlined, will save the labor and appliance cost oi' manual operations and of temporary appliances for holding the sliced or aggregated unit.

The invention has severalv diierent aspects which may again be understood by reference to the typical, but not limitative, application of the invention to operation on bread. One of the as- 45 pects of the invention has to do with the provision, in combination with a slicingmechanism and a wrapping mechanism, of entirely automatic means which takes the sliced unit from the Slicer r and conveys it into the wrapper to the point of 0 wrapping, holding the sliced unit at all timesin unitary form.

Another aspect oi the invention is that concerned more directly with 'the Wrapping mechanism and the provision of an in-feed therefor which, in combination vwith the Wrapping mechanism, Willitake a sliced unit and feed it into the Wrapper to the point of Wrapping, holding the slicesin4 unitary relation. y

And a third aspectofthe invention is the particular provision of anew type of feeding mech- 5 anism in itself. The objects of the invention, in its various aspects, are accomplished by providing automatic conveyer-mechani'sm taking the sliced loafA from the Slicer andfdeliv'ering it into the Wrapper to the wrapping point, all in-synchronism with the operations of the ySlicer and Wrapper. What I refer to as thewrapper infeed forms an element of this conveying mechanism; this Wrapper infeed issoconstruc'ted'that, taking the sliced loaves from `the slicer conveyor, it holds the slices in unitary relation and feeds them into the. Wrapper insuch relation' to the action of the wrapper mechanism as to keep the slices always in unitary relation'. A'And this wrapper infeed is furthermore soconstructed that, without changing its cooperative relations with either the slicer and the delivery of slices therefrom, or the Wrapper and its mechanism-which picks up the sliced unit from the infeed mechanism, the infeed mechanism may be adjusted to take various sizes and lengths of loaves. i f

Furthermore,y the infeed mechanism is so cooperative with the Wrapper mechanism that when the infeedV mechanism delivers the sliced unit, the n Wrapper mechanism takes the sliced unit, Whatever its size, and, Vholding it in unitary relation, carries it through the operations of the Wrapper mechanism to the wrapping point.

The general outline, as Well as details, of 35 mechanism by which the objects of my invention inits various aspects are accomplished, will be better? understood from the following detailed descriptionof the present preferred forms and arrangements, rather than from any preliminary'gen'eral description. I proceed immediately therefore to a full and ldetailed description of Athe present lpreferred mechanisms, which; are illustrative and typical of my invention, and `from an understanding of Vwhich the invention itself may be best understood. For this purpose I refer tothe accompanying dravvingsin which: Y V`fFig. 1 is an elevation of a slicer, delivery conveyenan-d Wrapper arranged and constructed acr cording to my invention; l 0

Fig. 2 is an endY elevation, as viewed from the rleft of Fig. 1,*of a wrapping machine showing V'awrapper and an infeed conveyer constructed 'accor-ding to my invention; `h` Figa-3 is an enlarged plan view of theinfeecl conveyer on line 3--3 of Fig. 2, certain parts being broken away;

Fig. 4 is a plan view similar to Fig. 3, with the parts in position to accommodate a relatively shorter loaf, and with certain parts omitted for simplicity of illustration;

Fig. 5 is a diagrammatic plan view of the infeed showing the pusher arms, the gates, and the cams for swinging the gates;

Fig. 6 is an elevation on line 6 6 of Fig. 4 certain parts being omitted; Y

Fig. 7 is a detache-d perspective view of a. pusher arm showing its construction and mount- 111g;

Fig. 8 is an end elevation of the infeertlcona-` veyer as viewed from the right of Fig. 6;

Fig. 9 is a vertical section on line 0 9 o1.'

Fig. 3;

Fig. 10 is an enlarged elevation of the gate mounting block on line |0-|0 of Fig. 6;'

Fig-..11 is a vertical section ofy thegatemounting block on line |Y|-|| of Fig. 10;

Fig. 12 is a plan view on line. I2|2 of- Fig. 6 of the lower end of a cam, a.' follower and gate being shown diagrammatically in two successive positions;

Fig. 13 is a plan View on line |3-I3 of` Fig. 10 with the cam follower turnedforward 45;

Fig. 14 is a plan view similar to Fig. 13, with the cam follower turned backward 90;

Fig. 15 is an elevation of the chain adjusting sprocket on line |5-I5 of Fig. 3;

Fig. 16 is a vertical section of the delivery conveyer only on line Ilia-I6` of Fig. 3.

Fig. 1 illustrates a typical preferred arrangement of a slicer, a delivery conveyer, and a. wrapper with my new infeed, all arranged and constructed according to my invention. As illustrative of such slicers as may be used, but without limitation thereto, I show and. briefly describe a preferredform, reference being had for a. detailed description to my copending application, Ser. No. 544,429, filed June 15, 1931, for Synchronous slicer and wrapper feed; and. to my Patent No. 1,925,143, issued September 5, 1933, for` Bread slicers.

Mounted on base |0| is crankcase |02 within which is journaledV eccentric-shaft |03 driven from motor |05 by belt |04. Connecting rods |06 are attached to the eccentric-shaft and to the lower ends of the horizontally spaced slicing knives |01 to reciprocate vertically the knives. KnivesY |01 are spring supported at their upper ends from frame |08 on crankcase |02. The unsliced bread is initially placed onv chute ||0 down which it slides by gravity onto plate carried on bracket |09 on the crankcase. From this-.position on plate I I, the loaf is'moved along the upwardly inclined portion by ram ||2 until ithas passed the knives. The sliced. loaf. remains in the advanced position upon retraction of the ram. Further advancement of theloaf is securedby pressure of succeeding loaves, the rst loaf nally sliding down incline |f| Ia to be deposited. upon the plate H4 of the delivery conveyer.

This delivery conveyer has a frame made up of supports |I5 and ||5a rising from base |0| and joined at their upper ends by longitudinal rods IIS and transverse rods ILII and IIIa,l (Figs. 1 and l6). Plate H4 is suitably. supported on transverse rods` I I'I..l and II'Ia. Rod at one end. formsa drive shaft to'whichtwosprockets ||8 are attached, one on each. side of plate. H4, while; at the other end` of the conveyer two similar sprockets |I8a are mounted on rod II Ia to turn loosely. On sprockets I|8 and IiSa are chains ||9 paralleling plate IG. Carried on and between chains IIB are cleats |20 which advance the sliced loaf along plate li and onto the wrapper infeed. End rails I 2|, |22 and |23 are provided to guide the loaves and to hold the slices in unitary relation during the travel from the slicing knives onto the wrapper infeed.

The operations of the slicer and delivery conveyer are synchronized with each other and with the wrapper by driving them from the wrapper power shaft in timed relation with the wrapper mechanism. From the wrapper power shaft, which'y may be driven by any means, chain |26 drives a secondary shaft |21 in bearings |23. From this secondary shaft, the delivery conveyer is'driven by chain |22 passing over a sprocket on shaft III; and the slicer rain is driven by chain passing over a sprocket -on shaft i3| journaled in bearing |32. A pin in disk |36 on onev end of shaft I3! causes arm i3?, pivoted at its lower end to base ii, to oscillate and thus to reciprocate ram IIZ. By this arrangement, the loaves are sliced and deposited on the delivery conveyer at the proper time and rate; and subsequently the loaves are placed on the infeed at the proper time to be fed into the wrapper.

I. shall now describe the wrapper and infeed. Fig. 2 illustrates a wrapping machine as viewed from one end and shows the location of the infeed conveyer with a loaf of sliced bread thereon, the delivery conveyer being omitted. The frame ofr the wrapper is generally designated at i0 and has attached to it the bracket i i supporting the infeed. Upon bracket ii is slidably mounted carriage I2 of an irregular shape. The carriage is adjustable lengthwise of the conveyer with respect to frame I0, but forms a body to which most parts of the conveyer are attached and hence is fixed with respect to them. The carriage is made adjustable to accommodate loaves of various length, and since it is oimd so only on. wrapping machines adjustable to loaves of various sizes, my invention is not to be construed aslimited thereto. The adjustments required for loaves of different lengths will be explained in the latter part of this description.

The mounting of carriage I2 is shown in Figs. 3 and 4. which illustrate the conveying means in plan. Integral with bracket |I, are bosses I4, I5 that support rectangular bar i5. The projection Il of carriage I2 is provided with a slot, closed by plate I8, which receives with sliding fit bar I6 so that bar I6V forms the carriage support along which` the carriage is slidingly adjustable. The `movement of carriage I?. is controlled by lead screw 20 which is threaded inte fixed boss i5 and is rotatably attached at one end to boss IZb of the carriage by collars and ia pinned to th lead screw. As the screw is turned by means` of shaft 23, the lead screw is advanced or retracted through boss I5 and the carriage is moved along bar I6 by the travel of the cutter end or the screw. One'end of shaft 23 carries a sleeve 24 splined to the end of lead screw 20 so that shaft 23,remains fixed and endwise motion of the screw relative thereto is permitted.

The slotted surface plate 25, shown broken away in Fig. 3 and omitted in Fig. 4, is attached to bracket I and is the surface along which the sliced loaf is moved into the wrapper. The loaf propelling means and its drive are best illustrated in Fig. 6. The bread is advanced by pusher arms 21a, `21band 2`Ic carried by chain 28 which I 40a, keeps its arm A72111 vertical.

passes .around idler sprocket 2SVV and drives sprocket 35; idler 29 being mountedon a shaft journaled in bosses i2g at the inner end of carriage l2 while sprocket 35 is mountedon drive shaft .3L journaled inv bearingsV E22' at Vtheextreme outer end of carriage i2. On one end of shaft 3| is keyed bevel gear 32 (Fig. 3) meshing with bevel geart3 on shaft 35. Shaft 35 is journaled in boss I2C of thecarriage andVv is driven by sleeve 35 on the end of shaft 3l journaled .in bracket ilb on. the main supporting bracket II. Sleeve 35 is splined to shaft 35. Power to drive conveyor chain 23 .through the just described means is supplied from the wrap-l er power shaft |25 by chain 38 passing. over sprocket 31a on shaft 3l. All the moving elements of the wrapper are driven in timed relation from the power shaft. E25, and by driving the infeed from the same power source it will lhe ap'- preciated that the infeed thereby operatesv in synchronism with the wrapper elements as well -as with the Slicer and delivery conveyer.Y

The construction and operation of `all the pusher arms is the same and maybe seen in Figs. 6 and 7. Each pusher vcomprises an angular member having leg Eff upright when in the operative position, (see pushers 2in and 2lb) and a correspondingly horizontal leg Zig' offset from chain28 and upon which are mounted two rollers 45 and Mia, the angular member being pivotally attached to a triangular plate '53 on chain .23 by the pin of roller il as shown in Fig. 7. The

vtriangular attaching plate d3 fastened to the chain by a pair of the .usual chain pins. rIihe pusher arm is thus pivoted about a single point, the axle of roller te, and may be rotated about this point, the position of the arm being determined by guide means operating by contact with rollers lill and 45a. Bolted to portions If of carriage l2 at one side of chain 25 and in vertical alinement with rollers 49, 46a, are upper and lower track bars H and :32, respectively, which are so positioned as to receive rollers '23, loe between them during the time the arms are pushing bread into the vwrapper and so hold the pusher arm upright against the loaf end. Lower track bar i2 is curved downward at both ends for reasons that later will be set forth.

The bread is delivered onto plate 25 of the infeed conveyor by the slicer discharge conveyer or other suitable delivery means of which a typical form is here shown. The loaf is deposited kon plate 25 and then advanced into the wrapper by pressure of the pusher arms. Thus, when pusher 2id is traveling forward, the presence of track bars il and 52 above and below rollers 40,

The loaf advances into the wrapper between vertical side plates 4l and Ma, which are part of the wrapping elements, until it reaches end stop #i3 which stops the loaf in registration with elevator 49 to be picked up by the elevator and carried through the wrapping means. This stopping of the loaf requires that the pusher arm, now at 21h, be moved laterally away from behindthe loaf. Such motion is secured by so curving theadjacent end Ma, of thelower track bar that only roller 45a rides thereagainst as the varm moves downwardly around sprocket 29 in the manner shown at 2lb. After passing sprocket 29, the pusher arm falls by gravity until it is dependent from chain 28 as at 2'10 but has the same positio-n relative to the chain as it had up above. It isto maintain this same relative position that the outer end 425 of lower track `bar` 42 is bent .on the chain pins.

to conform to the periphery of sprocket 30. As a result, rollers 4B, 4ta engage the undersurface of the end 42h of track bar 42 and ride around thecurve so that when the pusher arm is again on top, the'pusher is once more uprightias when at 27a, andthe rollers are again coniined between thetrack bars. The pusher arms are equi-distant on chain 28 and are here shown as three in number though a different number may be used if convenient.

The part` of the infeedalready described is known in the art and no claim is laid to it as such, but is shownV and described sc that a clear understanding of my'invention may be had; and it will be understood that my invention is not necessarily limited thereto.

Referring again to Figs. 3, l and 6, it is seen that there is provided a second chain 50 paralleling chain 28 but extending beyond stop 3. The inner end of chain E) passes over sprocket` 5i mounted on extension bar 52 which is attached to and forms a part of carriage I2 so `that idler sprocket 5! is adjusted in and out with carriage I2. The outer end of chain 50 passes over drive sprocket 53 fastened to shaft 3l and driven thereby in conjunction with chain 28. A support for the inner end of extension bar 52 is provided by arm lila. on bracket Iib which forms part. of the` wrapper frame. Extension 53 slides over the stationary support Ina when the carriage is moved. v

Mounted on chain 55 is a. plurality of gates generally indicated at 55. Each is composed of a horizontal bar 5B with some vertical fingers 5l set in it, bar 56 having a shank portion 56e. bent to form a pivotal mounting in mounting block 55, the details of which are illustrated in Figs. and l1. The top of block 58 has ka bore to receive the rounded shaft 55a. of the gatefso that it may turn with respect to the block `and chain. Shank 55a is grooved at 55h and a rounded pin 59 is pressed by spring Bil into the groove so that the shank is releasably held in place. The bore containing spring Si] is closed by a plug 5l, pinned to the mounting block. rhe gates yare thus easily removed by merely lifting them from the mounting blocks, and when removed, the conveyer mechanism can continue to operate without them, using the pusher arms only. Av second function of pin 59 is to frictionally enl gage shank 55a to keep gate 55 from swinging too freely. As will become apparent later in the description, the gate is so mounted as to be turned by suitably placed cams, but is preferably not so free to swing as to be jarred out of a set .position by the vibration of the machine.

Block 58 has two depending flanges 58a, adapted to t over the chain as shown. lThe block is fastened to chain 55 by removing a pair. of link plates and substituting flanges 58a, using theA regular chain pins to fasten the parts together. .Attached to the under side of block 53 andextending for a vlink or so along the top of the chain each way from the block, is bar. 62which serves to keep the block always at right angles to the chain by preventing pivoting of the block The gate is thus held rigidly perpendicular when in the operative position. l Gates 55 are to hold up they slices at the -advancing end of the loaf, and thereby to hold the loaf in unitary relation. To do this, the gates are rotated at predetermined poirrts in their travel through denite arcs. I prefer to do this by means of cams actuating cam follower `64 fastened on gate shank 55a just above the mount.-

ing block. Each follower has two legs 64a and 61th" (see Figs. 5, 10, and 13) which extend horizontally.l and have rounded corners as shown.V

The cams to move these followers, see Figs. 3, 4', and. 5, are the irregularly shaped bars 65 and. 66 which extend along the top horizontal portion of chain 50, and the generally semicircu'- larbar 6.1 that extends along a portion of. the circumference of sprocket 53. Cam 65lv is` supported at two points; at its left end (as viewed in Figs. 3 and 4) it has a guide and support in arm. Illay over which it can slide, and over the carriage proper the cam is supported by the attached: pinv 68. which slides within guide 69 screwedxto carriage I2. Cam 66, which is shorter than cam B5 but parallels the latter, also slides at one end. on arm lea and at the other is supported. and guided by the fixed guide bar T attachedlto carriage I 2. A U-shaped connecting member 'I-I (Fig. 4) that passes under chain 50,.connects the two cam bars together and keeps them inthe same relative position longitudinally.

By" this construction it will be seen that cams and 66 are fastenedv together andare capable of' longitudinal motion relative to the wrapper frame and to the carriage, since they are slid'- ably mounted on each. The position of cams 65 and 66: is fixed by lever I2 pivoted at 12a to bracket Ich of the frame. One end of lever I2 engages traveling block 13 on adjusting screw 14 secured to cam 65, and the other end of the lever is attached to rod 'I5 which is connected to the fixed arm 'I6 attached to the portion. I1 of. carriage I2; The reasons for this construction will be apparent later,

'I'he cams 65, 66 and followers 64 are so positionedfas to be in horizontal alinement, one cam on either side of the followers. A channel 'I8 (shown only in. Figs. 4, 6 and 9) is supported on the carriage and cam connecting member 'III to provide a track in which chain D rides. This prevents the followers dropping below the cam's because of sag in the chain.

Thesemi-circular cam 6l (see Fig. 6) is fastened to carriage I2 by angle bracket 'I9 and coincides with the path of the followers 64 as they pass around sprocket 54. Cam 51 is beveled at the. top at 61a where it comes adjacent to cam. 65`so that the latter cam may move length'- wise over cam 61 when the carriage is moved and yety the passage of the followers from one cam. to the other is not interrupted.

Cam: 65 carries on its inner end the bread stop 48, one edge of the stop being supported directly on the cam bar and the other by diagonal brace 80. Stop 48 consequently moves in and outV with the cam 65.

Inv the ensuing description of the operation of the cams and gates, reference will be liadmainly to'-Fig. 5 which shows diagrammatically the principal parts in the position of Fig. 3, but detached from the rest of the mechanism.

'Ihe bread is brought to the infeed conveyer by a delivery conveyer. In the case here illustrated the loaves are moved along the conveyer platform II4 by cleats I2@ which extend across `the full length of the loaf and keep the slices alined. End rails |23 adjustably mounted on rods I3!! in brackets |38 hold the slices together While on the platform. Cleats |20 serve as a means to push` the loaf sideways onto surface plate 25 This action is timed to occur just as a'4 pusher arm is moving up to the position shown in dotted lines in Fig. 5 at' 2id and serves to insert the loaf between. a gate at A in. Fig. 5

Vthe end of: the loaf.

.fracasar and. the pusherv which is in the position shown at 21d; as'4 shown by the loaf in dotted lines in that gure. This position will be termed the initial loaf position on the infeed. It will beat onceapparent that no difficulty arises from placing; the loaf ahead of the continuously advancing arm alone.v There is, however, a different situation in moving the loaf into position behind the gate 55 which is moving in a direction at right angles to the motion of the loaf and which has a considerable dimension parallel to the motion of the loaf. Furthermore, the loaf must be insertedbetween the gate and arm, spaced a loaf length apart, while they are moving. To reduce the effective width of the gate at this time, the gate is pivoted at one edge over the center line of'chain 50, which runs close to the leading edge of the loaf in its initial position on the infeed; and the gate is swung, on this pivot, away from may be anything suitable depending on relative loaf and chain speeds, but is here shown typicallyv at A as 45.

This vinclination of the gate to the path of the loaf allows` the loaf to be started onto plate 25 immediately after the leading corner of the gate clears the path of the bread and in time for the loaf to be fully positioned against stop plate 83 (Figs. Brand 9) before a pusher arm touches the loaf. Relative to the gate A, the nearest corner of the loaf moves approximately parallel Ythereto and theY loaf is inserted behind the pivot 56a, to fit snugly between the pusher arm behind and the gate ahead. If the leading corner of the loaf doestouch the'gate, the loaf will ride along the gate as it advances and, because of the inclination of the gate, will be pushed into proper position against the pusher arm. This fact allows a slight latitude in timing the movement of the loaf relative to the pusher so that the loaf is certain` to be placed ahead of the arm.

In order to hold the gate in the inclined position asit moves along to the left (of Fig. 5) to position A, cam face 65a is placed closer to the chainthan the edge of bar 'I which defines the other side of the follower passage. This causes the fiat side face of follower leg 64b to ride against face 65a and the gate is held firmly in the diagonal position shown at A. The contact of the rounded corner of leg 64a with bar 'I0 prevents excessive rotation.

Additlonal'stop means to limit the swing of the gate is illustrated in Figs. 10, 13, and 14. Fig. 10, in which the gate is shown as at B, shows that a portion' of the top of mounting block 58 is raised and provides a vertical, longitudinal face 58,1' extending along the center of the block. Follower leg 64b is thicker than leg 64a. by the height of face 58j, and provides two vertical faces 64e and 64j, having an included angle of 45, each of which will contact face 58j to limit the swing of the gate. In Fig. 13 the gate is shown turned forward 45 as in position A thus bringing follower face 64e into contact with block face 58f. The complete follower and the gate positions are indicated by the dash-dot lines.

Moving on from position A to position B, which are two successive positions of the same gate, the follower passes between the inclined cam faces 65h and 6613 which rotate the gate backwards through 45 to bring it against the loaf end. The inclination of face 65h is away from the follower, releasing leg 64b, and the inclination of face 66h is toward` the follower, so that the follower is rotated until the fiat side surface ofy legv 64a rides The amount of this swing ered at the top -ofits path with the correctrinY A of Fig. 4, to reagainst the cam surface 66o. Cam 66 is now the closer of the cams to chain 59.

The location of the beginning of the inclined cam faces @b and 65h is determined by the inf itial position of vthe loaf on the conveyer and is near the forward end of the loaf or at a point approximately on` the prolongation of the lefthand rail i213. The point of best operation may be secured by turning adjusting screw 14 which causes the cams and to move together along carriage i2, block 'i3 being held nXed by lever 12.

As the gate is moved forward from B, it is held in position against the loaf; the rounded corner of leg 64b riding along cam face 65C and side of leg 64a along face Etc rotation of the gate until the inclined face 65d, opposite stop plate 48, is

reached. The gate is now in the position C of Fig. 5 where the loaf has just been brought-into register with the means for carrying it through the wrapping elements. The loaf, having reached stop 4t, is detained'in this position, though the gate passes on, and the pusher'behind the loaf is withdrawn downwardly from the pushing posi-` tion as shown in Fig. 6.

As the gateY` passes beyond stop 48, it strikes brace B9 (Figs.r5 and 8). This contact of bar 56 turns the gate counterclockwise 90 until it is trailing the mounting block as it passes over sprocket 5l. This turning brings follower face 64j in contact with block face 53j as shown in Fig. le and keeps the gate from swinging too far because of its inertia. If a narrow gate is used, this last turn may be omitted for it is not essential to the operation or" the conveyer as a whole; but' is desirable when using a wide gate so as to move the gate around the sprocket in the best manner and to clear parts of the frame that would `be in the way if the gate were unturned.

The gate is in the trailing position as it returns to the other side of the machine along the lower part of chain 5t, and the frictional Contact of pin 59 provides sufcient resistance to free swinging to keep it in place. Before the gate is brought into contact again with cam 55, it must be turned backward through the l35that it turned at the two points described. This turning is accomplished when the follower strikes the end of cam 6l. How this is done is shown in Fig. 12 which illustrates the position of the same gate jus before and just after turning.

On the lower end of cam bar 61 are fastened guide shoes $35, 36 and 8l. The first two are fastened directly to the top and bottom respectively of bar 6l while shoe 8l is fastened on by a U- shaped clip 8f3 that passes over chain 50. Top and bottom guides 85 and it are bent to form a flaring mouth to receive and guide follower 64 against cam Eil as shown by the gate in position E in Fig. 12. The rounded corner of leg 64b strikes the end of the cam bar and stops; and as the chain continues to pull the gate on, the follower turns until the side of leg 64b is riding against the vertical side face Eilb of cam 61 as shown at position F where the gate has swung through 135 from the position E. Vertical displacement of the follower from the shock of im-y pact is prevented by guides 85 and 8G which are above and below the follower legs; horizontal displacement is prevented by guides 85 and 81 which are both above follower 64: and placed one on either side of the mounting block, now above the gate.' Cam face Bib is in the saine vertical plane as cam face 65a so that the leg 64b rides along cam 6l and onto cam 55, and the gate is delivclination, shown by position ceive another loaf `Returning to the position of the loaf when placed against stop 48 ready to be lifted by elevator 49 (FigsgB and 4) it will be remembered that the pusher arm. at the rear end of the loaf is dropping vertically as illustrated in Fig. 6. The slices at this end are therefore no longer adequately heldin place, especially after elevator 49 picks the loaf' up andbefore it passes between plates 9U and 90a which are wrapping elements of the wrapper. Stop 48 is vertically alined. with vplate 90a and .extends to within a short distance thereof, but there is of necessityA a. large gap between the arm 21 b and plate 90. To hold up theY end slices :while passing this gap, there is provided a supporting means comprising spring plate 9| pivotally mounted on the upwardly curved end of extension 92 Whichis'pivotally mounted on shoe 93 "at 92a. 'o

Shoe `93 isa flat sheet curvedupwardly at'one end and placed inthe path of the .bread as indicated in Figs. 6 and 8.` It is located so as to be raised slightly bythe loaf=passing underneath. Shoe93 is'fpivotally and slidablyv mounted on rod 94 by Ymeans'ofarmJ-Ei which passes through an opening 41e in the side plate 41a, 'the arm r95v resting on the lower edge ofthe opening.

As 'a loaf is advanced by the infeed, its forward end engages the curved end of'shoe 93 to raise they shoeby pivoting aboutrod 94, so that the shoe vslides along the `top vof the loaf. After the loaf has passed into register withrelevator 49, the shoe drops back intoposition'with plate 9| press# ing against the endl of the "loaf to hold up the slices as the pusher at 21h is being withdrawn. When the loaf yhas been-elevated to a position between the pl`atesv90 and 99a, these end folding plates holdthe slices together for the period of Wrapping'. p

Stop 48 and shoe 93 with lplate 9! thus constitute means for engaging the -loaf as it is moved into registeringposition for the purpose of coniining the loaf endwise; and the loaf is held in unitary relation during the time it is in registration andnot confined by the conveyer elements as wellas during the time it is being moved into engagement with the plates' 90, 96a to be confined endwisethereby.' The shoe A93 is a part of the wrapper mechanism and holds plate 9| in alinement with plate 90 and stop ii'may if desired be integral with plate 90a, for to all intents and purposes the stop functions as a prolongation of plate 90 and a part of thelwrapper mechanism.

' Elevator'49 is-the means forcarrying the loaf upward past the Wrapping elements. Surface plate 25 `is cut away yat the'inner end so that the loaf is supported onlyvalong its edges by plate por# tions 25a and 25c'(Fig, 3) sotnat elevator 49 can move upward underneath the loaf to lift it from plate"25.' That thev elevator may accommodate loaves of Various lengths, it comprises upper plate 49a 'and lowerfplate 49h'. T he upper plate has attached toit bolts ll5la'nd the lower plate has slots 49eV throughY which the bolts pass; and by loosening the wing nuts on bolts v45, the two plates maybe moved endwise to fit loaves of different sizes. Bolts `45 also move in/slots in elevator arm 45 and the tightening of the Wing nuts serves to clamp the plates onto the elevator arm.

If the maximum Vand minimum lengths of the elevator obtained by Aa pair of plates are not suitable for therange of loaf lengths, two or more separate v-sets of plates 49a, v49h having different lengths may beprovi'ded-togive the required sizes. This may obviously becarr'ied lone step farther,

and single xed plates of the correct length pro vided'for-each size of loaf Wrapped.

Asthe loaf is carried upwards, it moves `past side plates 41 and 41a (Figs. l and 3), which are the conventional elements-that foldvthe 'wrapping material 4around sides of the loaf; and between endplates 90 and'90a '(Figs. 1 and 6), which are the conventional wrapping end folders. The

members of both-pairsfof .plates are Yadjustable' toward and away 4from each other to accommodate loaves of 'different lengths and widths. It will be appreciated that the elevator andthe side and yend folding plates initially hold .the sliced loaf together until thewrapping paper is folded around the loaf; andzduringthe'process 'of-wrapping, the .paper is held Varound the `loaf by the side :and end folding plates :and 4other fconven tional wrapping .elements :insuch "a mannerV .that the loaf is thereby held in unitary relation. After the wrapping processisl completed, the l-vvriatpping material Vperforms ithis .ffunction tas the floaf :is moved through the sealing :means and VAon :ont lof the wrapping fmachine.

-changing from Fig..3,whichsh0wsthe position of parts lwhen set for ,fa :long loaf, to A, which shows the I,parts vset for a relatively shorter loaf.

vInlmaking these adjustments,the-,delivery` conveyer vmaintains the mme `zposition .and .so the center line of the loaves moving on plate M4 is xed. To accommodate the decreased length, the rails v|23 Aare moved ycloser together, .each :one moving half of the decrement in .loaf length. The carriage |2 `is 'next moved, by turning lead screw 20, into the wrappers. .dist-ance equal to half of the change .-inloaf length. This-changes Vthe position of'chain 28 .and fthe pusher arms so that the arm -aty2'1d (Fig-t4) rreachesithe end of the loaf .in vits initial yposition on the conveyer, i.e., a point substantially on rthe;prolongation of the right hand rail |23, at -the time the .loaf reaches stop plate v83. The pusher -Zflb'fisfmoved by the change farther-into the wrapperiandmaintains `its position directly beneath wplate 90, yfor plates 90 and 90a'are simultaneously -moved togetheriby means not shown) justas arerails |123.

,The moving of Vcarriage ,I2 to the :left moves rod 15 in the same direction androtates lever l2 inra counterclockwise direction. Thelever moves cam bars 65k andfthetwo'being connected, .to .the right. The movement ofthe camsfis equal and opposite to the movementof -thezcarriage for Apivot 12a is located at `the .middle of lever 12.

The moving of ,camrBB carriesf-endstop Mirto Vthe right to maintain its Ialinement vwithfplate 80a. The inclined cam .faces lrand-ib -move'toward the initial loaf positiontokeep thefsamevposition 4relative thereto and Atotheleft hand rail |23. It

is chiefly to effect this last change thatlthe cam bars are made moveable with respect .to the carriage.

The movement of rod 15 .to the left-.is used to `shift shoe .83 and the vslice holding ,plate 8|. .Shifter S8 (Fig. 8) is fastened at. its lower-endvto Vrod'|'5; 4and is forked at vits :upperfendltostraddle arm '95. Thus as the carriage is moved, shiftery 98 slides arm 95 along rod 94 an amount equal to the carriage movement and, plate v9| maintains its vertical alinement with plate 90.

There `only remains to shorten the distance between the gates and pusher, for moving ofthe carriage hasshifted them as a unit without changing their spacing and the distance between any gate and the associated pusher arm is still the first loaf length. Means to correct 'this shown in Fig. 15. The drive ,sprocket '53 .for chain 50 is bolted to a hub 96 keyed to shaft :3|. Hub 96 has a circular flange with arcuate slots 96a through which pass bolts 91 joining the yhub and `sprocket together. By loosening bolts 91 and rotating sprocket 53 clockwise about shaft 3|, 'the chain 59 and gates 55 are moved to the right as viewed in Fig. 5. The gates are moved toward the associated pushers an amount equal to `the decrement'of loaf length, i. e., until the gate A and an arm at the Yposition shown at 21d are now spaced 'the length'ofthe short loaf, and the .bolts 9T Iagain tightened. The conveyer is now ready to function as before.

Thezab'ove method of changing the spacing betweenthe lgates andpushers is preferred-because of the wide range within which the adjustments may quickly and laccurately be made. If onlyfa few denite spacings were desired, it would `be possible to Vprovide in place of the adjustable sprocketfadditional mounting blocks58, properly spaced, to which the gates could be transferred.

To `adjust the Slicer to hold sliced -loaves in proper'unitary relation, end rails |2| .and `|22 are mounted as are rails |23 and can be shiftedapart or togetherfas required in the same mannerand amountvas rails |23. f

It will be understood that the drawings .and description are yto be considered merely .as illustrativeof and ynot as restrictive upon .the broader claims yappended hereto, for various -changes in design, structure,.andfarrangement.may be made without departing from the spirit and scope of said claims. Thus, though I refer .in the .description to sliced bread as the article .handled by ymyvfeed means, Ido so `to conveniently refer to such article, for it will be readily apparent that my invention vmay be used to handle and convey any subdivided article or Iunit to `which it is adapted.

.Iclaim2 l. In .a horizontally extending conveyer .adapted .to convey a subdivided unit, means to push the unit along the conveyer and confining means carried on the .conveyer at the .advancing end .of the unit to hold .the subdivisions thereof in unitary relation; .said confining Ymeans comprisinga pivotallymountedgate and means to swing `the gate about its vertical axisat a predetermined point in its travel against the unit.

2. In a horizontally extending conveyer adapted to convey a subdivided unit, means to push the unit along the conveyer and confining means carried on the conveyer at 'the advancing end of the unit to hold the subdivisions thereof in -unitary relation; said confining means comprising a pivotally mounted gate and means to swing the gate about its vertical axis at a pre determined point in vits travel against the unit; and `means to adjust the Aconfining -means .and pushing "means to receiveunits ofvariouslengths.

"3. `In a horizontally extending .conveyer adapted intermittently to ireceive a subdivided unit, a chain, a pusherarm on said .chain v:to move thezunit, a second chain .parallel .to the first mentioned chain, means to drive both chains in timed relation to each other; a gate movably mounted on the second mentioned chain, and means to move the gate about a vertical axis at a predetermined. point in its horizontal travel to hold the unit between the gate and the pusher arm.

fl. Inr a horizonally extending i conveyer adapted intermittently to receive a subdivided unit, a chain, a pusher arm on said chain to move the unit, a second chain parallel to the iirst mentioned chain, means to drive both chains in timed relation to each other, a gate movably mounted on the second mentioned chain, a cam follower attached to the gate, and cams adapted to operate the follower to move thegatc about a vertical axisat a predetermined point in its horizontal travel to hold the unit between the gate and the pusher arm.

5. In a horizontally extending conveyer adapted intermittently to receive a subdivided unit, a chain', a pusher arm on said chain to move the unit, a second chain parallel to the rst mentionedchain, means to drive both chains in timed relation toeach other, a gate pivotally mounted on the' second mentioned chain, a cam follower attached to the gate, and a cam operating the follower; said. cam being adapted to hold the gate at an angle inclined to the unit horizontally approaching the conveyer while said unit is inserted between the gate and pusher, and adapted to turn the gate through a horizontal angle at a predetermined point in its horizontal travel to hold the unit between the gate and pusher arm. l, Y

6. In a horizontally extending conveyer adapted intermittently to receive a subdivided unit, a chain, a pusher arm on said chain to move the unit, a second chain parallel to the rst mentioned chain, means to drive both chains in timed relation to each other, a gate pivotally mounted on the second mentioned chain, a'cam follower attached to the gate, and a'cam operating the follower; said cam being adapted to hold the gate at an angle inclined to the unit approaching the conveyer while said unit is inserted between the gate and pusher, and adapted to turn the gate through a ho 1izontal angle at a predetermined point in its horizontal travel to hold the unit between the gate and pusher arm; said cam being movable to adjust the point of turning the gate.

7. In a horizontally extending conveyer adapted intermittently to receive a subdivided unit, a chain, a pusher arm on said chain to move the unit, a second chain parallel to the rst mentioned chain, means to drive both chains in timed relation to each other, a gate pivotally mounted on the second mentioned chain, a cam follower attached to the gate, and a cam having two sets of cam faces' operating the follower; one of said sets of cam races being adapted to hold the gate at an angle inclined to the unit approaching the conveyer while unit is inserted between the gate and pusher, to turn the gate about a Vertical aXis at a predetermined point in its horizontal travel to hold the unit betweenV the gate and pusher arm, and to release the gate from the turned position, and theother of said sets or cam faces being adapted to return the gate to its inclined position.

8. In a horizontally extending conveyer adapted intermittently to receive a subdivided unit, a chain, a pusher arm on said chain to move the unit, a second chain parallel to the rst mentioned chain, means to drive both chains in timed relation to each other, a gate pivotally mounted on the second mentioned chain, a cam follower attached to the gate, and a cam comprising a pair of opposed cam faces along which the cam iollower rides; said cam being adapted to hold the gate in a position inclined to the direction of motion of the gate and then to turn the gate about a vertical axis at a predetermined point in its travel to a position transverse to direction of gate motion to hold the unit between the gate and the pusher arm.

9. In a horizontally extending conveyer adapted intermittently to receive a subdivided unit, a chain, a pusher arm on said chain to move the unit, a second chain parallel to the first mentioned chain, means to drive both chains in timed relation to each other, ay gate pivotally mounted on the second mentioned chain, a cam follower attachedto the gate, and a cam com-` prising a pair of lopposed cam faces along which the cam follower rides; said cam being adapted to hold the gate in a position inclined to the di- Y rection of motion of the gate and then to turn the gate about a vertical axis at a predetermined point in its travel to a position transverse to the direction of gate motion to hold the unit between the gate and the pusher arm; said cam being movable to adjust the point .oi turning thegate.

li). In a conveyer adapted to convey units of various lengths, the combination of a pair` of travelling chains, a carriage carrying the chains and longitudinally adjustable, apusher mounted on one chain, a gate movably mounted on the other chain, movable cam means adapted to move the gate at a certain point in its travell to engage the unit, means ior adjusting the longitudinal position or one chain with reference. to the other, and means to move the cam means equally and oppositely to adjustment movement of the carriage. l

11. In a conveyer adapted to receive and deliver units of various lengths at positions centered on a receiving point and a delivery point respectively, a longitudinally adjustable carriage, a pair of conveyer chains mounted to move longitudinally on the carriage, means for driving the chains in timed relation to each other, said driving means including means for adjustably changing the longitudinal position of one chain relative to the other, a pusher mounted on one chain, a gate movably mounted on the other chain to' be moved between unit engaging and disengaging positions, longitudinally movable cam means actuating the gate to move it to and from unit engaging position at certain points in its travel, and means for moving the cam means equally and oppositely to adjustment movement of the clarriage. 1

12. In combination with a mechanism having a unit receiving way dened byl unit confining members adjustable to receive various sized units centered at a predetermined point, and having a unit moving mechanism adapted to move units through the mechanism along a line through said point, an infeed conveyer mechanism feeding units along a path at right angles to said line Aof movement to a delivery position centered at said point, said infeed mechanism comprising a carriage adjustably movable along the line of feed, two chains mounted on the carriage to travel along the line of feed, means to drive the chains in timed relation to each other, a pusher mounted on one chain, a unit confining gate on the other chain and movable thereon to and from unit confining position, means whereby the relative position of the chains may be iadjustably changed, cammeansifor actuating the gate to 'and from unit confining position, said cam Jmeans being adjustably movable along the line of travel.

1.3. In combination with a mechanism having a unit receiving `way Vdefined Vby unit confining members adjustable to receive various sized units centered at a predetermined point, and having a ,unit moving mechanism adapted to move units through the mechanism along a line through said point, an infeed conveyer-mechanism feeding units along a `path rat right angles to said line of movement ,to a delivery position centered at said point, said infeedfmechanism comprising a carriage adjustably movable along the line of feed, two chains mounted on Vthe carriage to travel along the line of feed, means to drive the chains in'timed relation toeach other, a pusher mounted on one chain, a unit confining gate on the `other chain and movable thereon to'and from unit confining position, means whereby the relative position .of the .chains `may be adjustably changed, camineans for actuating the gate to and from unit confining position, said cam means being adjustably movable along the line of travel, andmeans causing the cam means to vbe adjustably moved equally andoppositely to carriage adjustment movement.

14. 11n combination, ya unit handling ymechanism having a unit receiving way deiinedby opposed unit confining and guiding members adjustable to receive various sized units centered at a predetermined point, ,one of said members including a unit confining `element adapted to move in behind a unit fed tothe way along a line at `right angles thereto, and having a unit moving mechanism adapted to move units through thedeiined way along a center line through said point, and an infeed conveyer `mechanism feeding units along a path at right angles to said line of Amovement and past said unit confining element toward the `opposite stationary confining and guiding member toa delivery position centered at said point, said infeed-mechanism comprising a carriageadjustably -movable along the linefof feed, two chains mounted on the carriage to travel along the line of feed, means to drive the chains in timed relation to each other, a pusher mounted on one chain and adapted to be carried by that chain out of engagement with the fed unit, just as the unitconfining element of the unit Vhandling mechanism moves in behind the unit, a unit'confining gate mounted on the other chain and :movable thereon to and from unit-confining position, means whereby the relative positions of the chains may be adjustably changed to vary the distance betweenpusher and confining unit, and adjustable cam means for moving the gate to and from unit confining position and adapted to move the gate from unit confining position as the end of the fed unit comes into engagement with said opposite `stationary confining member of thehandling mechanism.

15, In combination, a unit handling mechanism having a unit receiving way defined by opposed unit confining and guiding members adjustable to receive various sized units centered at a vpredetermined point, one of said members including a `unit vconfining element Yadapted fto move in behind a unit fed to the way -along fa line at right angles thereto, and having a unit moving mechanism adapted to move units through the defined way along a center line through said point, and an infeed conveyer-mechanism feeding units along a path at right angles to said line of movement and past said unit con- Iining element toward the opposite stationary confining and guiding member to a delivery position centered at said point, -said infeed mechanism comprising a carriage adjustably movable along the line of feed, two chains l'mounted on the carriage to travel along the line of feed,

means to drive the chains in timed relation to each other, a pusher mounted on one chain-and adapted to be carried Yby that chain out of en gagementwith the fed unit just as the unit confining element of the unit handling mechanism moves in behind the unit, a unit confiningv gate mounted on the other `chain-and movable thereon to and from unit confining position, means whereby the relative vpositions ofthe chains may be `adjustably changed to vary thev distance between pusher and confining unit, and adjustable cam means for moving the gate to and-from lunit confining position andadapted to move thegate from unit confining lposition as the end of the fed unit comes in engagement with said opposite stationary confining member of the handling mechanism, said cam means `being adjustably movable along the line of feed, and means interconnecting the carriage and cam means sothat they areadjusted equally andoppositely.

16. The combination of a delivery conveyer adapted to deliver slicedloaves of bread from a slicer at timed intervals, yand a wrapper infeed conveyer adapted to receive loaves from the delivery conveyer at said timed intervals; said delivery conveyervh'aving siderails to hold the sliced loaf together as it is vmoved along said conveyer and the rails being adjustably movable toward and away from each other to accommodateloaves of different lengths; said infeed conveyer-comprising a travelling chain, a pusher arm on the chain to move the loaf in a direction transverse to the direction of delivery conveyer movement, a second travelling chain parallel to the first mentioned chain, means to drive both chains in timed relation, a gate movably mounted on the second chain, a cam follower on the gate,and a cam operating the follower to move-the gate at a predetermined rpoint to hold the slices together between the pusher and the gate; the infeed'conveyer being bodily movable in a direction parallel to its feeding movement to compensate fora change in loaf length, whereby the vpusher arm may be moved one-half of such change tomaintain a position fixed with regard -to the initial position of a loaf deposited on the infeed; the gate being separately vmovable relative to Ithe pusher to maintain a position fixed relative to said initial loaf position; and said cam being automatically moved by the movement of the infeed an amount equal and opposite to the infeed conveyer movement to maintain a position fixed relative to said initial loaf position,

WILLIAM WALTER HARTMAN. 

